Series · 2025 · Documentary
Explores the chilling cases of lesser-known serial killers whose crimes went unnoticed for years, leaving a trail of fear and unsolved murders before they were finally caught.
2 seasons · 16 episodes

Episode 01
Carl Watts
Chilling confessions from a vicious slasher detail only some of his 100+ victims. When he's set to be the first serial killer ever released from prison, an eyewitness from decades prior could force justice on the man who vows to kill again.

Episode 02
William Suff
In the '90s, a deranged killer stalks sex workers in Riverside, Calif., claiming the lives of 13 women. When a would-be victim describes the perp to police, the race is on to catch the murderous john before he strikes again.

Episode 03
Daniel Conahan
Five corpses are found on the Florida hog trails. The investigation stalls until two men narrowly escape the perp's clutches. Years later, eight more bodies are found in nearby woods, leaving police to wonder if it's the same evil killer.

Episode 04
Terry Rasmussen
Multiple unidentified bodies are found inside barrels in a New Hampshire forest. Decades later, a murder 3,000 miles away reveals their connection to a serial predator who changes his identity after every violent kill.

Episode 05
Maury Travis
From 2001 the bodies of 12 black women start to surface in Missouri and Illinois. As the investigation intensifies the killer start to taunts authorities.

Episode 06
Herb Baumeister
A group of young gay men disappear in Indiana during the 1990s. An amateur detective uncovers clues that leads to identify a merciless offender.
based on 3 votes
Explores the chilling cases of lesser-known serial killers whose crimes went unnoticed for years, leaving a trail of fear and unsolved murders before they were finally caught.
Unknown Serial Killers of America is available to stream on Flicksy via 6 verified sources, aggregated from publicly available embed providers. The documentary has 2 seasons and 16 total episodes, rated 7.7/10 by 3 viewers.
Unknown Serial Killers of America has 2 seasons with 16 episodes in total.
Unknown Serial Killers of America is currently in production and returning for new episodes.
Unknown Serial Killers of America airs on Oxygen.
Unknown Serial Killers of America first aired on May 18, 2025.
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